Size: Queen  • Comfort level: Firm
Construction: Hybrid mattress with foam and wrapped coils
Comfort layer: High-density charcoal-infused gel memory foam
Support layers: High-density support foam and base support foam
Coil system: 720 individually wrapped 15-gauge coils (Queen)
Edge support: Steel-encased Ashley Edge with 2 perimeter rows of 13-gauge wrapped coils
Cover: 4-way stretch fabric with nano stain-resistant treatment
Encasement: Protective cover with concealed micro-teeth zipper and patented zip-tie closure
Surface cushioning: Luxury pillow-pocket construction
Compatibility: Adjustable-base compatible
Weight: 91 lbs. (Queen)
Foundation/box spring: Sold separately
Warranty: 10-year non-prorated manufacturer warranty
Available sizes: Queen and King
SKU: M43831
Why choose the Ashley Sleep Gray 1200 Hybrid Queen Mattress M43831?
The Ashley Gray 1200 Hybrid M43831 combines a firm sleeping surface with charcoal-infused gel memory foam, offering contouring cushioning over a structured coil system. Its 720 individually wrapped coils help limit partner movement, while two rows of heavier perimeter coils reinforce the edges for sleepers who use the full Queen mattress width. A protective, stain-resistant encasement adds a practical consideration for everyday mattress care, although cleaning should follow manufacturer instructions. At 12 inches thick, this hybrid provides a more moderate bed height than taller pillow-top models and is compatible with adjustable bases. A King size (M43841) is also available for shoppers seeking additional sleeping space.
Specificationsâ–¶
Specifications Details
Brand Name
Sierra Sleep® by Ashley
Material
Fabric
Lifestyle
Traditional
Bed Size
Queen
Assembly
Assembly Required
Product Detailsâ–¶
Comfort level: firm
High-density charcoal-infused gel memory foam
High-density support foam
Base support foam
720 power packed 15-gauge wrapped coils
Ashley Edge "steel encased"; 2 perimeter rows of 13-gauge wrapped coils for edge support
4-way stretch cover
Bed bug encasement; luxury nano stain treated stretch cover; concealed micro-teeth zipper with patented zip tie closure
Luxury pillow pocket technology
Adjustable base compatible
10-year non-prorated warranty
Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details
Foundation/box spring available, sold separately
Availabilityâ–¶
Available Configurations
SKU M43831 — Queen Dimensions: 79.5''W x 60''D x 12''H | Weight: 85.0 lbs▶
This option is a Queen Mattress.
SKU M43841 — King Dimensions: 79.5''W x 76''D x 12''H | Weight: 107.67 lbs▶
This option is a King Mattress.
How firm is the Ashley Gray 1200 Hybrid Queen M43831, and what does charcoal gel memory foam add?
Ashley rates the Gray 1200 M43831 as firm. Its charcoal-infused gel memory foam contours to the body, while high-density support foam and wrapped coils provide resistance beneath the cushioning layers. The charcoal and gel are incorporated into the comfort foam, but they do not guarantee odor elimination or cooler sleep. For shoppers comparing firm mattress support with the cushioning provided by memory foam, M43831 offers a combination of both rather than a completely rigid sleeping surface.
Do the 720 wrapped coils and Ashley Edge make the Gray 1200 M43831 suitable for couples?
The Queen M43831 contains 720 individually wrapped 15-gauge coils, plus two perimeter rows of heavier 13-gauge coils. Independent interior coils help reduce movement transferred between partners, while reinforced edges provide additional support when sitting or sleeping near the sides. The perimeter is not completely rigid, and motion isolation is not absolute. Since memory foam's contouring and movement-absorbing properties differ from more responsive latex, the foam-and-coil combination is worth considering for couples who want cushioning with spring support. This model contains charcoal-infused memory foam, not listed latex.
Can the Ashley Gray 1200 Hybrid M43831 use an adjustable base, and how should its protective cover be maintained?
Yes. Ashley lists the Gray 1200 M43831 as adjustable-base compatible. Its 12-inch profile creates an approximate mattress-top height of 24 inches on a support surface 12 inches above the floor, before compression. When choosing between a platform bed and a separate foundation, confirm mattress support requirements and finished height. The mattress also features a stain-treated protective encasement with a concealed zipper and closure system. Do not assume the cover is removable or machine washable without manufacturer care instructions. A foundation is sold separately.
Shopping for the Ashley Sleep Gray 1200 Hybrid Queen Mattress M43831 in Chicago or Illinois? VBU Furniture offers convenient Chicagoland pickup, delivery throughout Chicago and Illinois, and nationwide shipping across the contiguous 48 states.
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